class_docstr: A class that handles the parameters of Tensor Tracer.
docstr: Checks if the given trace mode is valid.
docstr_tok: ["Checks","if","the","given","trace","mode","is","valid","."]
code: def _get_trace_mode(self):
      """Checks if the given trace mode is valid."""
  
      found, trace_mode = self.get_flag_value(FLAG_NAME_TRACE_MODE)
      if not found or not trace_mode:
          trace_mode = TRACE_MODE_NORM
      valid_trace_modes = [
          TRACE_MODE_NAN_INF,
          TRACE_MODE_PART_TENSOR,
          TRACE_MODE_FULL_TENSOR,
          TRACE_MODE_NORM,
          TRACE_MODE_MAX_ABS,
          TRACE_MODE_SUMMARY,
          TRACE_MODE_FULL_TENSOR_SUMMARY,
          TRACE_MODE_HISTORY,
      ]
      if trace_mode not in valid_trace_modes:
          raise ValueError(
              'Invalid trace mode "%s" given to the Tensor_Tracer.'
              "Valid trace modes are: %s"
              % (trace_mode, valid_trace_modes)
          )
      return trace_mode
  
imports: import os
  import os.path
  import re
  from absl import flags
  from tensorflow.python.ops import linalg_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 6 for calling the TTParameters obj's underlying member method code with example usage: obj._get_trace_mode() and returns: trace_mode